diff --git a/server/mcp_server_bytehouse/pyproject.toml b/server/mcp_server_bytehouse/pyproject.toml
index eb577ce9..7ec2d292 100644
--- a/server/mcp_server_bytehouse/pyproject.toml
+++ b/server/mcp_server_bytehouse/pyproject.toml
@@ -1,13 +1,13 @@
 [project]
 name = "mcp_bytehouse"
-version = "0.2.0"
+version = "0.2.1"
 description = "An MCP server for ByteHouse."
 readme = "README.md"
 license = "Apache-2.0"
 license-files = ["LICENSE"]
 requires-python = ">=3.10"
 dependencies = [
-     "mcp[cli]>=1.12.0",
+     "mcp[cli]>=1.12.0,<2",
      "python-dotenv>=1.0.1",
      "uvicorn>=0.34.0",
      "clickhouse-connect>=0.8.0",
diff --git a/server/mcp_server_bytehouse/uv.lock b/server/mcp_server_bytehouse/uv.lock
index b767f9c5..bfff663c 100644
--- a/server/mcp_server_bytehouse/uv.lock
+++ b/server/mcp_server_bytehouse/uv.lock
@@ -479,7 +479,7 @@ cli = [
 
 [[package]]
 name = "mcp-bytehouse"
-version = "0.1.0"
+version = "0.2.1"
 source = { editable = "." }
 dependencies = [
     { name = "clickhouse-connect" },
@@ -498,7 +498,7 @@ dev = [
 [package.metadata]
 requires-dist = [
     { name = "clickhouse-connect", specifier = ">=0.8.0" },
-    { name = "mcp", extras = ["cli"], specifier = ">=1.12.0" },
+    { name = "mcp", extras = ["cli"], specifier = ">=1.12.0,<2" },
     { name = "pip-system-certs", specifier = ">=4.0" },
     { name = "pytest", marker = "extra == 'dev'" },
     { name = "python-dotenv", specifier = ">=1.0.1" },